Sagot :
Réponse:
A= -5x-10
B= 3x-6
C= x²+3x
D= 4x-x²
E= -3x²-12x
F= 2x²-14x
G=12x²+6x
H= -20x²+40x
Réponse :
A = -5(x + 2) = -5x - 10
B = 3(x - 2) = 3x - 6
C = x(x + 3) = x² + 3x
D = x(4 - x) = 4x - x² = - x² + 4x
E = - 3x(x + 4) = - 3x² - 12x
F = 2x(x - 7) = 2x² - 14x
G = 6x(2x + 1) = 12x² + 6x
H =-4x(5x - 10) = -20x² + 40
Explications étape par étape